Connection and operation manual
Technical changes reserved
0141 0316-152 13.05.2016
Level controller for conducting liquids
24 V OEM-version without housing
5.2
Switching point adjustment
The switching point is adjusted as per conductivity of wa
-
ter with the preset potentio-meters. In normal practice, it is
good enough to set the potentiometer in the most sensitive
position (right side limit).
This corresponds to a switching point of approx. 12 µS.
This works for most of the applications with clean rain wa
-
ter or tap water.
Ex factory the potentiometer is central adjusted.
If required, the sensitivity of each electrode can also be
separately adjusted.
By turning the potentiometer in the anti-clockwise direc
-
tion, the electronics become less sensitive and this gives
better results with contaminated water.
In normal practice, all potentiometers should be kept at the same position and only for very diverse conditions of electrodes with respect
to the reference electrode or for different lengths of connection lines, it is practically required to separately adjust the sensitivity. After any
change in cable length of the connection lines, the adjustment should be checked again.
5.3
Configuration of operating mode
The switching polarity of the relay (Fill/empty) can be adjusted by two jumper plugs. The jumper plug “MODE1“ is meant for Relay 1
(lower level) and jumper plug “MODE2“ is for Relay 2 (upper level).
If connected in position 1-2, the relay switches ON with rising level and in position 2-3, the relay switches ON with falling level.
5.4
Connection of user‘s own sensors
!
The following details are useful for persons with adequate knowledge of the associated electronics. The applicable safety regulations
shall be duly followed! Connection and mounting operations shall be carried out only after switching off the voltage supply. The following
instructions help in connection of your own sensors at the input socket of electronics. However, this certainly needs necessary attention as
operating voltage is present at the socket also. Sometimes, wrong connection may lead to damage of the components or result in failure
of the module itself.
!
Touching the electronic components in switched off condition should also be avoided. Electronic components can get damaged due to
electrostatic discharge process. ESD protection measures should be duly observed!
B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen
Fon +49 771 83160 | Fax +49 771 8316-50 | [email protected] | bb-sensors.com
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